Here I will give instruction how to setup or enable your blogger custom robots.txt.Custom robots.txt setup or enable most important increase seo ranking on your blogger site.
1.First login your blogger account
2.Choose your site and click setting button
3.Click search preference
4.You can see custom robots.txt now click yes button
Now you can code below copy this code and past your site custom robots.txt
User-agent:*
Disallow: /search
Allow:/
Sitemap: http://tech-onebd.blogspot.com/feeds/posts/default?orderby=UPDATED
Lastly sitemap option give your site url here and save changes click finally done
